NEET PG DENTAL EXAM

HISTOLOGY

URINARY SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The hormone secreted by the posterior pituitary gland in reaction to low blood pressure, this triggers the kidneys to reabsorb more water from urine.
A
luteinizing hormone
B
epinephrine
C
antidiuretic hormone
D
adrenomedullin
Explanation: 

Detailed explanation-1: -Anti-diuretic hormone acts to maintain blood pressure, blood volume and tissue water content by controlling the amount of water and hence the concentration of urine excreted by the kidney.

Detailed explanation-2: -ADH, also known as vasopressin (see Chapter 35). ADH is released from the posterior pituitary (neurohypophysis) in response to increased osmolality (sensed by magnocellular neurons in the hypothalamus), decreased circulating plasma volume and/or angiotensin II.

Detailed explanation-3: -Vasopressin. Vasopressin (AVP) is another posterior pituitary hormone, which differs from OXT only by two amino acids (Banerjee et al., 2017). Its primary functions are to retain water in the body by increasing water reabsorption in the kidney, and to constrict blood vessels, thereby increasing arterial blood pressure.

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